An ultra-high pressure oil pipe special-shaped ball head sealing surface grinding machine

Abstract

The utility model discloses a kind of superhigh pressure oil pipe special-shaped ball head sealing surface grinding machines, including mounting bracket and rotating support, one end of the rotating support is rotatably connected on the mounting bracket, the other end of the rotating support is connected grinding feed assembly, the grinding feed assembly is connected angle grinder near one end of the mounting bracket;Rotating drive assembly for its close rotation is installed on the rotating support;High-pressure oil pipe is installed on the mounting bracket by oil pipe special fixture;Wherein, by the movement of the rotating drive assembly and the grinding feed assembly, the grinding of angle grinder to the high-pressure oil pipe special-shaped ball head sealing surface is realized.The utility model aims at overcoming the defects of the prior art and provides a kind of superhigh pressure oil pipe special-shaped ball head sealing surface grinding machine, realizes the high-efficiency, high-precision grinding of superhigh pressure oil pipe special-shaped ball head sealing surface, improves maintenance efficiency and quality.

Description

Technical Field

[0001] This utility model relates to a grinding machine for the sealing surface of an irregularly shaped ball head of an ultra-high pressure oil pipe. Background Technology

[0002] Modern large marine diesel engines generally employ ultra-high pressure common rail fuel systems, with the fuel lines sealed at both ends using irregularly shaped ball joints. Operating pressures often exceed 200 MPa. These ball joint seals are prone to failure during service due to wear, scratches, or corrosion, leading to serious malfunctions such as fuel leaks and reduced engine power. Currently, on-site repairs mainly rely on manual grinding, which presents three major technical bottlenecks: 1. Loss of precision control: It is difficult to guarantee the geometric accuracy and surface finish of the ball joint, resulting in loss of roundness and poor seal reliability after repair; 2. Low efficiency: It relies entirely on the technician's experience and feel, leading to long operation times and impacting ship operations; 3. Safety risks: Repair quality fluctuates greatly, making it difficult to fundamentally eliminate the hidden danger of ultra-high pressure fuel leaks.

[0003] Therefore, a grinding machine for the sealing surface of irregularly shaped ball heads of ultra-high pressure oil pipes is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the existing defects and provide a grinding machine for the sealing surface of the irregular ball head of the ultra-high pressure oil pipe, so as to achieve efficient and high-precision grinding of the sealing surface of the irregular ball head of the ultra-high pressure oil pipe, thereby improving maintenance efficiency and quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grinding machine for the sealing surface of an ultra-high pressure oil pipe irregular ball head, comprising a mounting bracket and a rotating bracket, one end of the rotating bracket being rotatably connected to the mounting bracket, the other end of the rotating bracket being connected to a grinding feed assembly, and the end of the grinding feed assembly near the mounting bracket being connected to an angle grinder; a rotary drive assembly for its own tight rotation is mounted on the rotating bracket; The high-pressure oil pipe is installed on the mounting bracket using a special oil pipe clamp; The grinding of the high-pressure oil pipe shaped ball head sealing surface is achieved by the movement of the rotary drive assembly and the grinding feed assembly.

[0006] Preferably, the mounting bracket includes a base, the upper end of which is connected to an upright frame; the lower end of the rotating bracket is connected to a bracket shaft, and the upper and lower ends of the bracket shaft are each rotatably connected to a first mounting seat, and the two first mounting seats are connected to the side wall of the upright frame.

[0007] Preferably, the grinding feed assembly includes a dovetail groove grinding feed tray assembly, which is connected to the upper end of the rotating bracket. The front end of the dovetail groove grinding feed feed tray assembly is connected to the angle grinder via an adjustable bracket for the angle grinder, and the rear end is connected to a feed handwheel.

[0008] Preferably, the rotary drive assembly includes a ball screw and a screw nut, a through groove is formed in the middle of the rotary bracket, one end of the ball screw passes through the through groove and is rotatably connected to a screw fixing seat, the screw fixing seat is rotatably connected to the side wall of the upright frame through a second rotating shaft; the other end of the ball screw is connected to a screw handwheel.

[0009] Preferably, it further includes a third rotating shaft and a third mounting base. A screw support is connected to the screw nut, and a third rotating shaft is connected to each of the upper and lower ends of the screw support. The third rotating shaft is rotatably connected to the third mounting base, and the third mounting base is connected to the side wall of the rotating bracket.

[0010] Preferably, the oil pipe clamp includes a diamond-shaped pipe clamp and a double semi-circular limiting block. An installation hole is provided on the upright frame, the diamond-shaped pipe clamp is disposed within the installation hole, and the double semi-circular limiting block is located inside the diamond-shaped pipe clamp. The high-pressure oil pipe is connected to the inner side of the double semi-circular limiting block. The diamond-shaped pipe clamp locks the high-pressure oil pipe using a locking adjusting bolt. The diamond-shaped pipe clamp is connected to the upright frame using clamp fixing bolts.

[0011] Preferably, the dovetail groove grinding feed plate assembly is connected to the upper end of the rotating bracket via a plate pivot.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This ultra-high pressure oil pipe irregular ball head sealing surface grinding machine improves maintenance efficiency. The equipment allows operators to complete the grinding process with only simple equipment adjustments and operations, reducing manual operation time and labor intensity, improving ship maintenance efficiency, and reducing downtime caused by maintenance.

[0013] Ensuring Repair Accuracy: Precise feed control, adaptive angle adjustment, and stable fixture design effectively avoid problems such as out-of-roundness that occur during manual grinding, ensuring repair accuracy. The ground sealing surface achieves high geometric accuracy and surface quality requirements, improving the service life and sealing performance of ultra-high pressure oil pipes.

[0014] Improving repair quality: Using high-precision grinding equipment and high-quality grinding discs enables fine grinding processes, resulting in smooth and defect-free sealing surfaces and ensuring the stability of repair quality.

[0015] With its versatility, multi-axis grinding angle adaptive mechanism, and adjustable oil pipe-specific clamps, the equipment can adapt to the grinding of irregular ball head sealing surfaces of ultra-high pressure oil pipes of different specifications and shapes. It has wide applicability and can meet the maintenance needs of various types of ultra-high pressure oil pipes on ocean-going vessels.

[0016] With its low cost, simple structure, and low manufacturing cost, it is particularly suitable for operation and use on ship sites where space and resources are limited. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the left side of the ultra-high pressure oil pipe irregular ball head sealing surface grinding machine of this utility model; Figure 2 This is a schematic diagram of the right side of the ultra-high pressure oil pipe irregular ball head sealing surface grinding machine of this utility model; Figure 3 This is a rear view schematic diagram of the ultra-high pressure oil pipe irregular ball head sealing surface grinding machine of this utility model; Figure 4 This is the first isometric view of the tubing clamp of this utility model; Figure 5 This is the second isometric view of the tubing clamp of this utility model; Figure 6 This is the third isometric view of the oil pipe clamp of this utility model.

[0018] In the diagram: 1. Base; 2. Oil pipe clamp; 201. High-pressure oil pipe; 202. Diamond-shaped pipe clamp; 203. Double semi-circular limit block; 204. Clamp fixing bolt; 205. Locking adjustment bolt; 3. Stand; 4. Feed handwheel; 5. Screw handwheel; 6. Screw support seat; 7. Screw nut; 8. Ball screw; 9. Support shaft; 10. Support plate shaft; 11. Rotating support; 12. Angle grinder adjustable support; 13. Angle grinder; 14. Diamond grinding disc; 15. Dovetail groove grinding feed support plate assembly; 16. First mounting seat; 17. Screw fixing seat; 18. Third shaft; 19. Third mounting seat. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-6As shown, a grinding machine for the irregular ball head sealing surface of an ultra-high pressure oil pipe includes a mounting bracket and a rotating bracket 11. One end of the rotating bracket 11 is rotatably connected to the mounting bracket, and the other end of the rotating bracket 11 is connected to a grinding feed assembly. The end of the grinding feed assembly near the mounting bracket is connected to an angle grinder 13. A rotary drive assembly for its own tight rotation is mounted on the rotating bracket 11. The grinding of the irregular ball head sealing surface of the high-pressure oil pipe 201 is achieved by the movement of the rotary drive assembly and the grinding feed assembly. The angle grinder 13 serves as the grinding power source and is fixed to the dovetail groove grinding feed support plate assembly 15 via an adjustable clamp 12. A diamond grinding disc 14 is mounted at the output end of the angle grinder 13. The preferred abrasive particle size of the diamond grinding disc 14 is 3000 mesh, used to achieve high-precision, high-surface-finish grinding of the ball head sealing surface. Angle grinder 13, model DLX-7710, serves as the grinding power source. It boasts high power and high speed, providing sufficient grinding power. Diamond grinding disc 14, model MP-100 3000 mesh, features high hardness and high precision, enabling fine grinding and ensuring the grinding of the irregular ball head sealing surface of the high-pressure oil pipe.

[0021] Specifically, the mounting bracket includes a base 1, with the upper end of the base 1 connected to the upright 3; the lower end of the rotating bracket 11 is connected to the bracket shaft 9, and the upper and lower ends of the bracket shaft 9 are each rotatably connected to a first mounting seat 16, and the two first mounting seats 16 are connected to the side wall of the upright 3.

[0022] Specifically, the grinding feed assembly includes a dovetail groove grinding feed tray assembly 15, which is connected to the upper end of the rotating support 11. The front end of the dovetail groove grinding feed feed tray assembly 15 is connected to the angle grinder 13 via an adjustable bracket 12; the rear end is connected to a feed handwheel 4. The dovetail groove grinding feed feed tray assembly 15 is connected to the upper end of the rotating support 11 via a tray shaft 10.

[0023] Specifically, the dovetail groove grinding feed support plate assembly 15 includes a bottom fixed plate and an upper sliding plate. A feed screw is rotatably connected to the bottom fixed plate. One end of the feed screw is connected to a feed handwheel 4. A feed screw nut is connected to the feed screw. The feed screw nut is connected to the upper sliding plate. The front end of the upper sliding plate is connected to the adjustable bracket 12 of the angle grinder. By rotating the feed handwheel 4, the feed screw is rotated. The rotation of the feed screw causes the feed screw nut to move forward. The forward movement of the feed screw nut causes the upper sliding plate to move. The movement of the upper sliding plate causes the adjustable bracket 12 of the angle grinder and the connected angle grinder 13 to move. This provides a stable and controllable linear feed for the grinding execution unit.

[0024] Specifically, the rotary drive assembly includes a ball screw 8 and a screw nut 7. A through slot is formed in the middle of the rotary support 11. One end of the ball screw 8 passes through the through slot and is rotatably connected to a screw fixing seat 17. The screw fixing seat 17 is rotatably connected to the side wall of the upright frame 3 via a second rotating shaft. The other end of the ball screw 8 is connected to a screw handwheel 5. It also includes a third rotating shaft 18 and a third mounting seat 19. A screw support seat 6 is connected to the screw nut 7. A third rotating shaft 18 is connected to the upper and lower ends of the screw support seat 6. The third rotating shaft 18 is rotatably connected to the third mounting seat 19. The third mounting seat 19 is connected to the side wall of the rotary support 11.

[0025] Specifically, the ball screw 8 is fixed to the side of the rotating bracket 11 via the screw support 6. The screw handwheel 5 is installed at one end of the ball screw 8 to provide rotary input; it converts the precise rotary motion of the ball screw 8 into the linear displacement of the actuator, achieving micron-level feed control.

[0026] Specifically, the high-pressure oil pipe 201 is mounted on the mounting bracket via a special oil pipe clamp 2. The special oil pipe clamp 2 includes a diamond-shaped pipe clamp 202 and a double semi-circular limiting block 203. A mounting hole is provided on the upright bracket 3, and the diamond-shaped pipe clamp 202 is positioned within the mounting hole. The double semi-circular limiting block 203 is located inside the diamond-shaped pipe clamp 202, and the high-pressure oil pipe 201 is connected to the inner side of the double semi-circular limiting block 203. The diamond-shaped pipe clamp 202 locks the high-pressure oil pipe 201 in place using a locking adjusting bolt 205. The diamond-shaped pipe clamp 202 is connected to the upright bracket 3 via a clamp fixing bolt 204. The special oil pipe clamp 2 allows for adjustment of the clamping tightness and ensures 360° rotation of the oil pipe during grinding.

[0027] Specifically, the tubing clamp 2 is mounted on the support frame 3 via clamp fixing bolts 204. The ultra-high pressure tubing 201 to be repaired passes sequentially through the V-shaped positioning mechanism formed by the double semi-circular limiting blocks 203 and the diamond-shaped tube clamp 202, and is secured by tightening the locking adjusting bolts 205. This clamp combines strong clamping with flexible rotation: by adjusting the tightness of the locking adjusting bolts 205, the operator can manually rotate the tubing 201 at a uniform speed during the grinding process to achieve uniform grinding of the circumference of the ball head sealing surface.

[0028] In use, first pass the ultra-high pressure oil pipe to be ground through the diamond tube clamp 202 and fix it with the double semi-circular limit block 203, tighten the locking adjustment bolt 205, and then connect the oil pipe special clamp 2 to the stand 3 with the clamp fixing bolt; install the diamond grinding disc 14 on the angle grinder 13, and fix the angle grinder 13 on the angle grinder adjustable clamp 12; Then, the angle grinder 13 is started to rotate the diamond grinding disc 14 at high speed. The operator first manually adjusts the lead screw handwheel 5 to make the rotating grinding disc 14 gently contact the damaged area of ​​the oil pipe ball head. Due to the multi-axis characteristics of the rotating support 11, the grinding disc 14 will be precisely aligned and fit against the spherical surface.

[0029] Finally, the feed handwheel 4 is precisely controlled to slowly feed the grinding disc 14 towards the spherical surface with an extremely small feed amount (micrometer level). Simultaneously, the assistant slowly and evenly rotates the clamped oil pipe, allowing the grinding disc 14 to grind the entire circumference of the spherical surface. By adjusting the lead screw handwheel 5, the rotating bracket 11 drives the grinding disc 14 to swing in an arc along the spherical head surface of the oil pipe, covering the entire spherical surface to be ground.

[0030] This ultra-high pressure oil pipe irregular ball head sealing surface grinding machine improves maintenance efficiency. The equipment allows operators to complete the grinding process with only simple equipment adjustments and operations, reducing manual operation time and labor intensity, improving ship maintenance efficiency, and reducing downtime caused by maintenance.

[0031] Ensuring Repair Accuracy: Precise feed control, adaptive angle adjustment, and stable fixture design effectively avoid problems such as out-of-roundness that occur during manual grinding, ensuring repair accuracy. The ground sealing surface achieves high geometric accuracy and surface quality requirements, improving the service life and sealing performance of ultra-high pressure oil pipes.

[0032] Improving repair quality: Using high-precision grinding equipment and high-quality grinding discs enables fine grinding processes, resulting in smooth and defect-free sealing surfaces and ensuring the stability of repair quality.

[0033] With its versatility, multi-axis grinding angle adaptive mechanism, and adjustable oil pipe-specific clamps, the equipment can adapt to the grinding of irregular ball head sealing surfaces of ultra-high pressure oil pipes of different specifications and shapes. It has wide applicability and can meet the maintenance needs of various types of ultra-high pressure oil pipes on ocean-going vessels.

[0034] With its low cost, simple structure, and low manufacturing cost, it is particularly suitable for operation and use on ship sites where space and resources are limited.

[0035] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grinding machine for the sealing surface of an ultra-high pressure oil pipe irregularly shaped ball head, characterized in that, It includes a mounting bracket and a rotating bracket (11), one end of which is rotatably connected to the mounting bracket, and the other end of which is connected to a grinding feed assembly. The end of the grinding feed assembly near the mounting bracket is connected to an angle grinder (13). A rotary drive assembly for its own tight rotation is mounted on the rotating bracket (11). The high-pressure oil pipe (201) is installed on the mounting bracket by a special oil pipe clamp (2); The grinding of the irregular ball head sealing surface of the high-pressure oil pipe (201) is achieved by the movement of the rotary drive assembly and the grinding feed assembly.

2. The ultra-high pressure oil pipe irregular ball head sealing surface grinding machine according to claim 1, characterized in that, The mounting bracket includes a base (1), the upper end of which is connected to a stand (3); the lower end of the rotating bracket (11) is connected to a bracket shaft (9), and the upper and lower ends of the bracket shaft (9) are each rotatably connected to a first mounting seat (16), and the two first mounting seats (16) are connected to the side wall of the stand (3).

3. The ultra-high pressure oil pipe irregular ball head sealing surface grinding machine according to claim 2, characterized in that, The grinding feed assembly includes a dovetail groove grinding feed tray group (15), which is connected to the upper end of the rotating bracket (11). The front end of the dovetail groove grinding feed tray group (15) is connected to the angle grinder (13) through the angle grinder adjustable bracket (12); and the rear end is connected to the feed handwheel (4).

4. The ultra-high pressure oil pipe irregular ball head sealing surface grinding machine according to claim 2, characterized in that, The rotary drive assembly includes a ball screw (8) and a screw nut (7). A through slot is opened in the middle of the rotary bracket (11). One end of the ball screw (8) passes through the through slot and is rotatably connected to the screw fixing seat (17). The screw fixing seat (17) is rotatably connected to the side wall of the upright frame (3) through a second rotating shaft. The other end of the ball screw (8) is connected to the screw handwheel (5).

5. The ultra-high pressure oil pipe irregular ball head sealing surface grinding machine according to claim 4, characterized in that, It also includes a third rotating shaft (18) and a third mounting base (19). A screw support base (6) is connected to the screw nut (7). A third rotating shaft (18) is connected to the upper and lower ends of the screw support base (6). The third rotating shaft (18) is rotatably connected to the third mounting base (19). The third mounting base (19) is connected to the side wall of the rotating bracket (11).

6. The ultra-high pressure oil pipe irregular ball head sealing surface grinding machine according to claim 2, characterized in that, The oil pipe clamp (2) includes a rhomboid pipe clamp (202) and a double semicircular limiting block (203). The support frame (3) has an installation hole. The rhomboid pipe clamp (202) is installed in the installation hole. The double semicircular limiting block (203) is located inside the rhomboid pipe clamp (202). The high-pressure oil pipe (201) is connected to the inside of the double semicircular limiting block (203). The rhomboid pipe clamp (202) locks the high-pressure oil pipe (201) with a locking adjusting bolt (205). The rhomboid pipe clamp (202) is connected to the support frame (3) with a clamp fixing bolt (204).

7. The ultra-high pressure oil pipe irregular ball head sealing surface grinding machine according to claim 3, characterized in that, The dovetail groove grinding feed plate assembly (15) is connected to the upper end of the rotating bracket (11) via the plate shaft (10).

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